West Nile Virus

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The Salt Lake County Health Department has confirmed the first human case of West Nile virus in Utah this year.

Judy Fahys/KUER

  Katie Montenegro is a vector control technician at the Salt Lake City Mosquito Abatement District. She’s in the lab, peering through a magnifying glass at a pile of dead mosquitos. She picks one.

Three Utah Horses Test Positive for West Nile Virus

Sep 22, 2014

Three Utah horses have tested positive for West Nile Virus. Dr. Warren Hess is the assistant state veterinarian at the Utah Department of Agriculture and Food. He says they’ve been dealing with West Nile Virus in horses since about 2003, with as many as 60 horses contracting the virus in a single year.

“Vaccination has certainly been a significant help in preventing this disease." he says. "All three of the horses, and the vast majority of all horses that have come down with this disease have been unvaccinated animals.”


The Salt Lake County Health Department has confirmed Utah’s first human case of West Nile Virus this year. Health officials are urging people to protect themselves against the mosquito-borne virus.  Dr. Dagmar Vitek is a health director with the Salt Lake County Health Department.  She says the department does regular testing for the presence of the virus in mosquitoes.

West Nile Virus Detected in Utah Mosquitos

Jul 22, 2014

Health officials say West Nile virus has been detected in mosquitos in Utah. But so far, no human cases have been reported.  The virus has been found in mosquito pools in Box Elder and Uintah counties. Rebecca Ward with the Utah Department of Health says humans who contract the virus may not necessarily develop symptoms, but it can be very serious, particularly for those with compromised immune systems.

Health Officials Warn of West Nile Virus Threat

Aug 30, 2012

As West Nile virus spreads across the country, Utah health officials are advising residents to use bug repellant this holiday weekend.  So far three cases of West Nile virus have been reported in Utah.  Two were contracted out of state, but one was caught in Box Elder County.   JoDee Baker is an epidemiologist with the Utah Department of Health.  She says West Nile has been detected in a number of mosquito pools around the state.